Nine-year-old Chance Watson is lying, cheating, stealing, and flunking out of school. Then, one night, a wonderful, magical sheepdog appears and promises to make his dreams come true, if he can follow ''The Rules.'' Soon, with the help of his talking, sometimes invisible dog, Chance has changed his life and the lives of many of the students at his school. But there are those who are out to stop him and prove his furry friend is not real, but only a figment his imagination! Even Chance begins to wonder: is he crazy?